diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 9ffa188c69b..55b41ae582f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2014-08-18  Jan Hubicka  <hubicka@ucw.cz>
+
+	* ipa-visibility.c (update_visibility_by_resolution_info): Do no turn UNDEF
+	comdats as extern.
+
 2014-08-18  Jan Hubicka  <hubicka@ucw.cz>
 
 	* gimple-fold.c (fold_gimple_assign): Do not intorudce referneces
diff --git a/gcc/ipa-visibility.c b/gcc/ipa-visibility.c
index 110d22b43c0..d33c36bee9f 100644
--- a/gcc/ipa-visibility.c
+++ b/gcc/ipa-visibility.c
@@ -391,6 +391,7 @@ update_visibility_by_resolution_info (symtab_node * node)
 
   define = (node->resolution == LDPR_PREVAILING_DEF_IRONLY
 	    || node->resolution == LDPR_PREVAILING_DEF
+	    || node->resolution == LDPR_UNDEF
 	    || node->resolution == LDPR_PREVAILING_DEF_IRONLY_EXP);
 
   /* The linker decisions ought to agree in the whole group.  */
@@ -400,6 +401,7 @@ update_visibility_by_resolution_info (symtab_node * node)
       gcc_assert (!node->externally_visible
 		  || define == (next->resolution == LDPR_PREVAILING_DEF_IRONLY
 			        || next->resolution == LDPR_PREVAILING_DEF
+			        || next->resolution == LDPR_UNDEF
 			        || next->resolution == LDPR_PREVAILING_DEF_IRONLY_EXP));
 
   if (node->same_comdat_group)